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Core Switch file transfer is slow.

Sheraz.Salim
VIP Alumni
VIP Alumni

Hi all.

we have a core switch and there are two server directily connected to it but we notice to download a file from one server to other take 1minutes for 800M. they are on same vlan. full duplex and on auto speed.

but on an other core and different site with same setup it takes 2 seconds to downlad the 800M file.

I could not figure out what could be a casue of issue please help me.

cat4500e-entservicesk9-mz.122-54.SG.bin

SW-4507#show spanning-tree vlan 206

VLAN0206
  Spanning tree enabled protocol rstp
  Root ID    Priority    4302
             Address     649e.f36a.f880
             Cost        3
             Port        641 (Port-channel1)
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec

  Bridge ID  Priority    16590  (priority 16384 sys-id-ext 206)
             Address     1cdf.0ffe.58c0
             Hello Time   2 sec  Max Age 20 sec  Forward Delay 15 sec
             Aging Time  300 sec

Interface           Role Sts Cost      Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Gi2/17              Desg FWD 4         128.81   P2p Peer(STP)
Gi2/18              Desg FWD 4         128.82   P2p Peer(STP)
Gi5/1               Desg FWD 4         128.257  P2p Edge
Gi5/2               Desg FWD 4         128.258  P2p Edge
Gi5/3               Desg FWD 4         128.259  P2p Edge
Gi5/4               Desg FWD 4         128.260  P2p Edge
Gi5/5               Desg FWD 4         128.261  P2p Edge
Gi5/8               Desg FWD 4         128.264  P2p Edge
Gi5/9               Desg FWD 19        128.265  P2p Edge
Gi5/10              Desg FWD 19        128.266  P2p Edge
Gi5/11              Desg FWD 19        128.267  P2p Edge
Gi5/12              Desg FWD 19        128.268  P2p
Gi5/38              Desg FWD 100       128.294  Shr Edge
Gi5/39              Desg FWD 4         128.295  P2p Edge
Gi5/40              Desg FWD 4         128.296  P2p Edge
Gi5/41              Desg FWD 19        128.297  P2p Edge
Gi5/42              Desg FWD 4         128.298  P2p Edge
Gi5/43              Desg FWD 4         128.299  P2p Edge
Gi5/44              Desg FWD 4         128.300  P2p Edge
Gi5/45              Desg FWD 4         128.301  P2p
Gi5/46              Desg FWD 4         128.302  P2p
Gi5/47              Desg FWD 4         128.303  P2p
Gi5/48              Desg FWD 4         128.304  P2p
Gi6/17              Desg FWD 19        128.337  Shr Edge
Gi6/19              Desg FWD 4         128.339  P2p Edge
Gi6/20              Desg FWD 4         128.340  P2p Edge
Gi6/21              Desg FWD 4         128.341  P2p Edge
Gi6/22              Desg FWD 19        128.342  P2p Edge
Gi6/24              Desg FWD 4         128.344  P2p Edge
Gi6/40              Desg FWD 4         128.360  P2p Edge
Gi6/41              Desg FWD 19        128.361  Shr Edge
Gi6/42              Desg FWD 4         128.362  P2p Edge
Gi6/43              Desg FWD 19        128.363  P2p Edge
Gi6/44              Desg FWD 4         128.364  P2p Edge
Gi6/46              Desg FWD 4         128.366  P2p Edge
Gi6/47              Desg FWD 4         128.367  P2p Edge
Gi6/48              Desg FWD 4         128.368  P2p
Po1                 Root FWD 3         128.641  P2p


206  C_Server_Farm                    active    Gi5/1, Gi5/2, Gi5/3, Gi5/4
                                                Gi5/5, Gi5/6, Gi5/7, Gi5/8
                                                Gi5/9, Gi5/10, Gi5/11, Gi5/37
                                                Gi5/38, Gi5/39, Gi5/40, Gi5/41
                                                Gi5/42, Gi5/43, Gi5/44, Gi5/45
                                                Gi5/46, Gi5/47, Gi6/13, Gi6/14
                                                Gi6/15, Gi6/16, Gi6/17, Gi6/18
                                                Gi6/19, Gi6/20, Gi6/21, Gi6/22
                                                Gi6/23, Gi6/24, Gi6/38, Gi6/39
                                                Gi6/40, Gi6/41, Gi6/42, Gi6/43
                                                Gi6/44, Gi6/45, Gi6/46, Gi6/47

interface Vlan206
 description C_Server_Farm
 ip address 10.178.2.4 255.255.255.128
 ip helper-address 192.168.6.52
 ip helper-address 192.168.5.85
 no ip redirects
 standby 1 ip 10.178.2.1
 standby 1 priority 101
 standby 1 preempt
 standby 1 track 3 decrement 10

SW-4507#show standby brief | i 206
Vl206       1    101 P Standby 10.178.2.3      local           10.178.2.1


Server ip address  10.178.2.76 and connected to Gig 5/44

show run interface gigabitEthernet 5/44
Building configuration...

Current configuration : 144 bytes
!
interface GigabitEthernet5/44
 description QMED
 switchport access vlan 206
 switchport mode access
 duplex full
 spanning-tree portfast
end


show interfaces gigabitEthernet 5/44
GigabitEthernet5/44 is up, line protocol is up (connected)
  Hardware is Gigabit Ethernet Port, address is e05f.b980.dd5b (bia e05f.b980.dd5b)
  Description: QMED
  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 1000Mb/s, link type is auto, media type is 10/100/1000-TX
  input flow-control is on, output flow-control is on
  Auto-MDIX on (operational: on)
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output never, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 0 bits/sec, 0 packets/sec
     1048386296 packets input, 274440571487 bytes, 0 no buffer
     Received 1668974 broadcasts (1409731 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 input packets with dribble condition detected
     1786103275 packets output, 2295826254837 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out


server ip address 10.178.2.80 connected to gig 6/46
!
interface GigabitEthernet6/46
 description QMED
 switchport access vlan 206
 switchport mode access
 spanning-tree portfast

#show interfaces gigabitEthernet 6/46
GigabitEthernet6/46 is up, line protocol is up (connected)
  Hardware is Gigabit Ethernet Port, address is e05f.b980.d99d (bia e05f.b980.d99d)
  Description: QMED
  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
     reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA, loopback not set
  Keepalive set (10 sec)
  Full-duplex, 1000Mb/s, link type is auto, media type is 10/100/1000-TX
  input flow-control is on, output flow-control is on
  Auto-MDIX on (operational: on)
  ARP type: ARPA, ARP Timeout 04:00:00
  Last input never, output never, output hang never
  Last clearing of "show interface" counters never
  Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
  Queueing strategy: fifo
  Output queue: 0/40 (size/max)
  5 minute input rate 0 bits/sec, 0 packets/sec
  5 minute output rate 1000 bits/sec, 2 packets/sec
     176600001 packets input, 166543334695 bytes, 0 no buffer
     Received 395023 broadcasts (307030 multicasts)
     0 runts, 0 giants, 0 throttles
     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
     0 input packets with dribble condition detected
     339883818 packets output, 303784931111 bytes, 0 underruns
     0 output errors, 0 collisions, 0 interface resets
     0 babbles, 0 late collision, 0 deferred
     0 lost carrier, 0 no carrier
     0 output buffer failures, 0 output buffers swapped out

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1 Reply 1

Philip D'Ath
VIP Alumni
VIP Alumni

Either configured the speed and duplex on both ends of the connections, or not at all.

My guess - there is an accidental duplex mismatch.  Change everything to auto/auto.